OM GROUP INC

CUSIP: 670872100 Class: COM

FMR LLC's Holding History (CIK: 0000315066)

Note: Option positions (PUT/CALL) are excluded.

Q1 2015
Shares 626,600 Value ($000) $18,817 Avg Close — Range —
Q4 2014
Shares 1,964,092 Value ($000) $58,530 Avg Close — Range —
Q3 2014
Shares 1,996,600 Value ($000) $51,812 Avg Close — Range —
Q2 2014
Shares 1,996,600 Value ($000) $64,750 Avg Close — Range —
Q1 2014
Shares 2,000,000 Value ($000) $66,440 Avg Close — Range —
Q4 2013
Shares 2,000,000 Value ($000) $72,820 Avg Close — Range —
Q3 2013
Shares 2,000,000 Value ($000) $67,560 Avg Close — Range —
Q2 2013
Shares 3,185,000 Value ($000) $98,480 Avg Close — Range —